Four nations abstained from the moratorium, which will restrict the use of imidacloprid and clothianidin, made by Germany's Bayer, and thiamethoxam, made by the Swiss company, Syngenta. The ban on use on flowering crops will remain in place throughout the EU for two years unless compelling scientific evidence to the contrary becomes available.

More than 30 separate scientific studies have found a link between the neonicotinoids, which attack insects' nerve systems, and falling bee numbers. The proposal by European Commission - the EU's legislative body - to ban the insecticides was based on a study by the European Food Safety Authority, which found in January that the pesticides did pose a risk to bees' health.